#include "Tag.h"

Location operator-( const Location & a,const Location & b) {
    double reL = a.first - b.first;
    double reR = a.second - b.second;
    Location re={ reL , reR };
    return re;
}

Location operator+( const Location & a,const Location & b) {
    double reL = a.first - b.first;
    double reR = a.second - b.second;
    Location re={ reL , reR };
    return re;
}

double operator*(const Location &a, const Location &b){
    return a.first * b.first + a.second * b.second;
}

